Pipe joint



Marh l0, 1931. B. M. BRowNl-:LL

PIPE JOINT Filed April 2, 1927 9 Il llll l with the accompanyingdrawing,

, is a ange 4, said flange l threaded portion Patented Mar. 10,1931.

l UNITED STATES'PATENT OFFICE'.

-BARNETTMORSEBROWNELL OF ST. LOUIS,

v PRODUCTS CO., A (IORLOIRI'ATION MISSOURI, ASSIGNOR TO DIAMOND METAL OFMISSOURI v j PIPE Jorma Application led April 2,

a pipe joint of the flexible type which is adapted to withstand highpressure withl provision vwhereby the joint is prevented from leakingunder rapid changes in temperature or pressure.

Anotherobject of the invention is to provide a pipe joint havingrelatively movable members,with a sealing gasket interposed between themembers, together with pressure means for centering and seating thegasket.

Another object of the invention is to provide a flexible pipe jointhaving a sealing gasket arranged in association with the other parts sothat there will be a minimum friction between 'the gasket and thecontacting walls of the: joint structure.-

An additional object of the'invention is toimp-rove and simplify theconstruction of flexible pipe joints, the im rovement in `the structurebeing apparent rom the following detailed description, taken inconnection in which,

Fig. 1 is a plan view.

Fig. 2 is a side elevation.

Fig. 3 is a vertical section 3;-3 of Fig. 1.

In the embodiment of the invention illustrated in the drawing, the pipejoint is shown as comprising. coupling members 1 and 2. The member 1 isgenerallyin cylinon the line Adrical form and is provided with aslightly enlar ed cylindrical portion 3 below which being formed with ahorizontal upper wall and an inwardly in- `clined lowerwall, thusroviding a shoulder having an 4inclined ace against which one wall of agasket seats. The member 1 is preferably provided with an exteriorly 5whereby it may be connected with a pipe section.

The* member 2, as shown in the drawing, is in the form of an elbow,.althou h it will be understood that it may bema e with a straightlpassage, if desired. An annular flange 6 has a diameter sullicient to'receive in telescopingengagement the inner end of the to providelmember 8 is vsubstantially 1927. serial No. 1so,453.

member 1. The face of the member 2, mediate the flange and the openingthrough the member, forms a shoulder against which the lower edge of themember 1 is seated. The face of the member 2 is provided with a. secondvertical flange 7 of annular form, which flange 7 is spaced inwardly.from the edge of the face of the member 2 and is of a diameter inexcess of the diameter of the flange 6, so .that there is an annularspace formed between said flanges 6 and 7 constituting a seat for aspring. The outer wall ofthe iange 7 is threaded and is adapted t0receive a gland nut or connecting member 8, the lower end of which isthreaded over the threaded portion of the flange 7 The V-shaped in formand has its upper inner wall 9 inwardly inclined, forming a matchingsurface with the undersurface of the shoulder 4 to provide a V-shapedchannel for a gasket. The upper wall of the member 8 is oiset to form ashoulder 10 that seats against thev upper face of the flange 4 on themember 1. The exter- .nal wall' at the top'of the member `8 is in theform of a member may :other tool for tightening the threaded connectionbetween the member and the flange 7. A

The member 2 at its outer extremity has an internally threaded portion12 whereb it may be connected with a pipe section. gasket 13 isv formedwith a V-shaped upper surface 14 with laterally spaced vertical sidewalls 15,- the lower edges `wardly tapered, the space between the wallsforming a channel 16. The gasket 13 may be made of any suitable sealingmaterial, preferably vulcanized rubber or other resil- -ientcompositions adapted to withsands wear. The gasketl is seated in theVshaped chan- `nel formed by the lower ace'pof the shoulder 4 and theand is held in place by a ring 17, the upper face of which is oppositelyinclined cooperatingwith the beveled edges of the vertical walls of thegaskt. The ring 17 is arranged to exert pressure against the gasket insuch .armanner that the walls 15 are spread laterpolygonal nut 11whereby the interr e engaged by a wrench or l of which are inally intoclose contact with the adjacent surfaces of the member 1 and of themember 8, it being understood that the ring 17 is forced upwardly by acylindrical expansion spring 18 seated between the ring and the face ofthe member 2, the spring being centered and held in position by beingseated in the space between the flanges 6 and 7. The ring 17 is providedwith a plurality of passages 19 eX- tending vertically therethrough andserving to communicate the space below the ring with the channel formedin the gasket.

The lateral pressure and the -upward pressure of the gasket is increasedas the pressure in the pipe joint is increased by the fluid pressurethat escapes between the pipe oint members by the pressure thus inducedin the channel of the gasket. However, when the iiuid pressure passingthrough the pipe joint is low, the mechanical pressure of the spring issuiiicient to firmly seat the gasket and to prevent leakage through thejoint between the member 1 and the member 8.

It will be understood that either the member l or the member 2 may bestationary and the other movable, or the members may be simplyrelatively movable to each other, each having a movement in connectionwith its respective pipe section. It will also be noted that theconstruction is designed so as to provide bearing surfacesfor therelatively movable members, thus avoiding undue wear or friction on thegasket.

From the foregoing description of the construction, it will be'apparentthat it fully accomplishes the purposes above set out and that it may beeconomically manufactured and readily assembled. It will also beapparent that the fluctuation in pressure and temperature of the fluidpassing through the joint will not cause the joint to leak under widelyvarying conditions of use.

am aware that the invention may be modified in various articularswithout'de: parting from the spirlt and scope thereof and I do notrestrict myself tounessential details.

What I claim and desire ters Patent is l y 1. A pipe joint comprising acylindrical member, 'a circumferential shoulder on said member providedwithl an inclined face, a second member having a swivel connect-ion withsaid first member, a connecting member having swivel engagement withsaid shoulder and provided with an inner wall portion inclined to` meetthe inclined face of said shoulder and forming therewith a substantiallyV-shaped seat at the joint between said first and said connectingmembers, a gasket having a substantially V-sha ed extremity conformingto the seat formed between said first and connecting members and beingalso provided with an annular cavity in its opposite extremity havingoutwardly flared edges, a spreader ring having inclined faces to secureby Letinner wall portion inclined to meet said in-I v clined face ofsaid shoulder and forming therewith a substantially V-shaped seat, agasket having one extremity matching and fitting against said seat andhaving in its opposite extremityl an annular cavity provided withoutwardly flared edges, a spreader ring having one end matching andseating against said outwardly liared edges of said gasket, and a springinterposed between said spreader ring and the wall of the other swivelmember than the one having said circumferential shoulder thereon.

3. A pipe joint comprising two tubular members having telescoping swivelconnection, a circumferential shoulder on one of said members providedwith an inclined face, a connecting member screwed 0n the other one ofsaid tubular members and having swivel engagement with said shoulder andthereby holding said -tubular members in abutting swiveled connection,said connecting member having an vinner wall portion inclined to meetsaid inclined face of said shdulder and forming therewith asubstantially V-shaped seat, a gasket having one extremity matching andfitting against said seat and having in its opposite extremity anannular cavity provided with outwardly iared edges, a spreader ringhaving one end matching and seating against said outwardly flared edgesof said cavity, and a spring interposed between said spreader ring andsaid tubular member on which said connecting member is screwed.

BARNETT MORSE BROWNELL. l

llO

